School-desk



(No Model.) v 2 sheets-Sheet 1..

J. M. SAUDEB- SCHOOL DESK.

No. 331,549 Patented Dec. 1, 1885.

WITNESSES J H I MENTOR a c .m I

MZQD 0 Y Mil/WM ATTORNEYS.

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(No Model.) 2 Sheet sSheet 2.

J.M.S AUD ER.

SCHOOL DESK.

WITNESSES ENTOR z W W Y W a ATTORNEYS.

UNITED STATES PATENT rrica.

JOHN M. SAUDER, OF HARRISBURG, PENNSYLVANIA.

SCHOOL-DESK.

SPECIFICATION forming part of Letters Patent No. 331,549, dated December1, 1885.

Application filed March 23, 1885. Serial No. 159,786.

To aZZ whom it may concern:

Be it known that 1, JOHN M. SAUDER, of Harrisburg, in the county ofDauphin and State of Pennsylvania, have invented certain new and usefulImprovements in School-Seats, of which the following is a full, clear,and exact description.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1, Sheet 1, is a side elevation of one of my improvedschool-seats, and showing in dotted lines the seat folded. Fig. 2, Sheet1, is a side elevation of the rear part of the seatarm and the upperpart of the seat-standard, the spring cap-plate being removed. Fig. 3,Sheet 1, is a side elevation of the rear part of the seatarm. Fig. 4,Sheet 1, is a side elevation of the inner side of the upper end of aseat-standard. Fig. 5, Sheet 1, is a side elevation of the seat, showingthe joints between the wooden strips. Fig. 6, Sheet 1, is a sectionalplan view of the seat-arm, seat-stand ard, and capplate, taken throughthe line 00 m, Fig. 1. Fig. 7, Sheet 1, is a sectional plan View of theseat-arm, taken through the line 00 m, Fig. 1, being the same section asin Fig. 6. Fig. 8, Sheet 1, is a sectional plan view of theseat-standard, taken through the line at m, Fig. 1, being the samesection as in Fig. 6. Fig. 9, Sheet 1, is a side elevation of the springcapplate. Fig.10,Sheet1,isasectionalplanviewof thesame,taken throughthelineyw,Fig.9. Fig. 11, Sheet 2, is an under side view of a part ofthe seat, showing the locking-groove. Fig. 12, Sheet 2, is a perspectiveview of the lockingflange of the seat-arm. Fig. 18, Sheet 2, is the sameview as Fig. 11, but showing a modification in the form of thelocking-groove. Fig. 14, Sheet 2, is a perspective view of a modifiedform of the locking-flange of the seat-arm. Fig. 15, Sheet 2, is asectional elevation of a part of the seat and of the locking-flange ofthe seat-arm.

The object of this invention is to provide school-seats constructed insuch a manner that the parts can be readily put together, and will beheld securely in place, and will allow the seat to be readily andnoiselessly folded and extended. I

The invention relates to a school-seat con- (N'o model.)

structed with the end of the seat-standard made with a rounded recess, acurved slot, a curved groove, a spring-receiving recess, and a curvedrounded recess, and connected with the end of the seat-arm made with arounded projection and stop projections by a spring cap-plate andfastening-bolts, whereby is produced a firm and strong joint, workingeasily and without noise. The upper parts of the end frames and theseat-arms are provided with tongues having tapered dovetailedprojections upon one or both sides, to engage with grooves in the seatand back provided with tapering enlargements, so that the said seat andback will be held firmly in place. The seat and back are made of woodenstrips having two rounded grooves, two rounded tongues, and two squareshoulders in each adjacent edge, so that close joint-s will be formedwhether the said strips be arranged in a plane or a curve, as will behereinafter fully de scribed and then claimed.

A represents the end frame of a school-seat, which has a recess, B, inits forward edge, to receive the rear edge of the seat when folded, andto form a standard, 0, to support the seat-. arm D. Upon the side of therear end of the seat-arm D are formed a rounded central boss, E, and twoprojections, F G, upon the rear and forward sides of and at a littledistance from the said central boss, E. The central boss, E, fits into acorresponding recess, H, in the adjacent face of the upper end of theseat-standaid 0 and works as a universal joint. The rear projection, F,works in a curved slot, I, in the side of the said upper end of theseatstandard 0, and the forward projection, G,

works in a curved groove, J, in the said side. In a recess, K, in theface of the side of the upper end of the seat-standard, at the lower endof the groove J, is placed a steel spring, L, with the upper end ofwhich the projection G comes in contact when the seat is turned downinto position for use, so that the said seat will come to its bearingsgradually and Without noise. 1

The upper end of theiEseat-standlard C is kept in place against the rearend of the seat arm D by a spring cap-plate, M, which is made with aninward projectionQN, to fit into a curved recess, 0, in the adjacentside of the upper end of the said seat-standard, as shown in Fig. 6, sothat the cap plate M will act as a spring to gradually arrest thedownward movement of the seat. The spring cap-plate M has holes in itsfront and rear ends to receive the bolts P, by which it is secured tothe seat-arm D, the rear bolt P passing through the projection F, placedin the slot I of the seat-standard O. The seat and back are formed ofwooden strips Q, the adjacent edges of which have two rounded tongues,R, two rounded grooves, S, and two narrow square shoulders, T, formed ineach edge, so that when the said strips Q are clamped together thesurplus glue will be pressed out and the wood at the shoulders T will becompressed, so that firm, strong, and close joints will be formed evenwhen the strips are arranged to form a curve in the said seat or back.

In the under side of the seat and the rear side of the back, near theirends, are formed grooves U, which are made with a series of tapered orwedge-shaped enlargements, V, upon both sides, and are undercut ordovetailed on both sides, as shown in Figs. 11 and 15, or upon one side,as shown in Fig. 13.

Upon the upper edges of the seat-arms D and the forward edges of theupper parts of the end frames, A,are formed tongues W, which are madewith tapered dovetailed projections X, made of such a size as to enterthe enlargements V of the grooves U, and fit into the dovetailed partsof the said grooves between the said enlargements, as shown in Fig. 15.The dovetailed projections X can be formed upon both sides of thetongues W, as shown in Figs. 12 and 15, or upon only one side, as

shown in Fig. 14, as may be desired.

Upon the sides of the dovetailed parts of the tongues WV are formedsmall ribs Z, which are slightly inclined downward in such a directionthat when the seat and back are driven into place the said ribs willengage with the wood and draw the said seats and backs down firmly uponthe shoulders of the castings.

In applying the seats and backs they are grooves, so that the said seatsand backs will be held firmly in place;

The seats and backs are driven home against shoulders Y, formed upon theends of the said tongues W.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a school-seat, the combination, with the end of the seat-standardO,having rounded recess H, curved slot I, curved groove J, and curvedrounded recess 0, of the end of the seat-arm D, having roundedprojection E, and stop projections F G, the spring cap-plate M, havingrounded projection N, and the fastening-bolts P, substantially as hereinshown and described, whereby is produced a firm and strong joiut,working easily and without noise, as set forth.

2. In a school-seat, the combination, with the end of these'at-standard0, having rounded recesses H, curved slot I, curved groove J, springreceiving recess K, having spring L, and curved rounded recess 0, of theend of the seat-arm D, having rounded projection N, and thefastening-bolts P, substantially as and for the purpose set forth.

JOHN M. SAUDER.

Witnesses:

JAMES T. GRAHAM, O. SEDGWIOK.

